Posted on January 18, 2015 at 12:11Hello.
I am use example VCP from the ST. on STM32f405
I am working under WinXP with a virtual COM port via the API as a file.
Cyclically sends data (short packets from 8 to 16 bytes) from PC to Device by function - WriteFile.
Data transfer immediately, but from time to time there is a strange TimeOut to transfer (WriteFile) sometimes up to 500ms.
Same work, but with a real COM port, such delays are not present.
What could be the problem?
